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Algebra please fuck
(2.1 and 2.2) Please fucking save me please oh god I hate my life
| Question | Answer |
|---|---|
| Is y a function of x? x^2 + y = 4 x^2 + y = 4 - x^2 y = -x^2 | Yes. |
| Is y a function of x? x^2 + y^2 = 4 x^2 + y^2 - x^2 = 4x - x^2 y^2 = 4 - x^2 y = +/- sq root of 4 - x^2 | No, there are two possible answers when taking the square root of x. (The square root property) |
| If graphing a function, how many points do you want to go in your t-chart for x values? | x --- -2 -1 0 1 2 |
| If a graph has two y-intercepts (The vertical line test) is it a function of x? | No |
| What kind of dot would be used for this type of function? x < 2 OR x > 2 | Open |
| What kind of dot is used when a function can be equal to or less/greater than a variable? x<_ 2 >__ x | Closed |
| What notation is this? {xI -4 < x <2} | Set- Builder notation |
| What notation is this? (-4, -2] | Interval notation |
| A bracket or parenthesis for greater/less or equal to? | Bracket |
| A bracket or parenthesis for greater/less? | Parenthesis |
| How many y-intercepts are there in a function graph? | At most one |
| Absolute value factions on a graph make what type of line? | Straight line (v-shape to include negative and positive points) \./ |
| An x^2 means you are graphing what type of line? | A parabola. The one that looks like a big U |
| Is the function decreasing or increasing?: / | Increasing |
| Is the function decreasing or increasing? \ | Decreasing |
| If a y-value makes a straight horizontal line no matter how many x's are graphed, it is called what type of function? .___________. | Constant |
| Relative maximums and minimums are found by | Locating the x and y values where the function is highest and lowest. |
| On a graph, every point (x , y) will also have an equivalent point of (-x , y). What kind of symmetry is this? | y-axis symmetry |
| On a graph, every point (x , y) will also have an equivalent point of (x , -y). What kind of symmetry is this? | x-axis symmetry |
| On a graph, every point (x , y) will also have an equivalent point of (-x , -y). What kind of symmetry is this? | Origin symmetry |
| If f(x) = (-x)^2 - 1 and f(x) = x^2 - 1 Is the function symmetric? | Yes |
| if -y = x^2 - 1 and y = -x^2 + 1 Is the function symmetric? | No. |
| if -y = ( -x)^2 - 1 and -y = x^2 - 1 Is the function symmetric? | No |
| If f(-x) = f(x) is this an even or odd function? | Even. The graph is symmetric to the y-axis |
| if f(-x) = -f(x) is this an even or odd function? | Odd. The graph is symmetric to the origin. |
| The right side of an equation does not change if x is replaced with -x f(-x) = f(x) Is this even, odd, or neither? | Even |
| The right side of an equation changes sign if x is replaced with -x f(-x) = -f(x) Is this even, odd, or neither? | Odd |
| The right side of an equation changes sign if x is replaced with -x, but not every term on the right side changes sign. f(-x) does not = f(x) and f(-x) does not equal -f(x) Is this even, odd, or neither? | Neither |
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