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Review- Unit

Thinking with Mathematical Models

QuestionAnswer
Find the y-intercept(starting point) in this equation. y=3x-1 -1
If the x-axis goes by +2 and the y-axis goes by +6, (using delta y over delta x) what is the slope(rate of change)? 3
Find the y-intercept(starting point) in this equation. y=-2x+13 13
If the x-axis goes by +1 and the y-axis goes by -2, (using delta y over delta x) what is the slope(rate of change)? -2
Find the y-intercept(starting point) in this equation. y=0.5x+1 1
If the x-axis goes by +2 and the y-axis goes by +1, (using delta y over delta x) what is the slope(rate of change)? 0.5
Determine if the following equation is increasing, decreasing, stays the same, or is undefined. y=0.5x+1 Increasing
Find the y-intercept(starting point) in this equation. y=-3x+4 4
If the x-axis goes by +1 and the y-axis goes by -3, (using delta y over delta x) what is the slope(rate of change)? -3
Determine if the following equation is increasing, decreasing, stays the same, or is undefined. y=-3x+4 Decreasing
Find the y-intercept(starting point) in this equation. y=1+2x 1
If the x-axis goes by +1 and the y-axis goes by +2, (using delta y over delta x) what is the slope(rate of change)? 2
Find the y-intercept(starting point) in this equation. Look carefully! y=(-1/3)x+6 6
If the x-axis goes by +1 and the y-axis goes by (-1/3), (using delta y over delta x) what is the slope(rate of change)? -1/3
Write an equation with the given information. Slope(rate of change)=2 and Y-Intercept(starting point)=-5 y=2x-5
Write an equation with the given information. Points on graph= (4,2) and (6,8) y=3x-10
Write an equation with the given information. Look carefully! Slope(rate of change)=0 and Y-intercept(starting point)=3 y=3
Which is linear? y=(2/3)x-4 or y=(20/x) y=(2/3)x-4
True or False? This equation is non-linear! y=-3x+12 False
True or False? This equation is linear! y=-2x+4 True
If a line goes from top left to bottom right it's... Negative
If a line goes from bottom left to top right it's... Positive
If a line goes straight across the y-axis it's... Staying the same
If a line goes straight down and never touches the y-axis it's... Undefined
Find the y-intercept(starting point) in this equation. y=(-1/2)x+40 40
If the x-axis goes by +1 and the y-axis goes by -2, (using delta y over delta x) what is the slope(rate of change)? -1/2
Use the equation to answer this question. y=-2,000x+30,000 If x=5 what would the answer be? 20,000
Use the equation to answer this question. y=-2,000x+30,000 What number would you have to multiply to this to equal 0? 15
Use the equation to answer this question. y=5x+100 If x=42 what would the answer be? 310
Use the equation to answer this question. y=5x+100 What number would you have to multiply to this to equal 160? 12
Use the equation to answer this question. y=-23x+1,874 If x=5 what would the answer be? 1759
Use the equation to answer this question. y=-23x+1,874 What number would you have to multiply to this to equal 1,506? 11
Find the y-intercept(starting point) in this equation. y=(4.95/5)x+0.96 0.96
If the x-axis goes by +5 and the y-axis goes by +4.95, (using delta y over delta x) what is the slope(rate of change)? 4.95/5
Use the equation to answer this question. y=(4.95/5)x+0.96 If x=25 what would the answer be? 25.71
Use the equation to answer this question. y=(4.95/5)x+0.96 What number would you have to multiply to this to equal (about)12? 11
If you're having any trouble with this, besides study more, what can you do? Look at your review packet! DUH!!!
Created by: Krispy Creme