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STAAR Key words

Must know basic vocabulary for STAAR

TermDefinition
Asymptote Boundary the graph does not cross. Y=0 is the equation.
Causation one event causes another, example: exposure to sun causes sunburn
Y-Intercept Where the graph crosses or touches the y axis.
Correlation Coefficient a decimal between -1 to 1 that shows how closely related two events are, closer to 1 (or -1) is strong. Closer to zero is weak.
Slope the rate of change of a linear function, the rise over run, “m”
Y as a Function of X a function has no repeating x-values and passes the vertical line test
Zero the point or points where a graph crosses the x-axis, AKA: roots, x-intercepts, solutions
Vertex the point where a parabola changes directions, the minimum or maximum point
Axis of Symmetry the x = equation that divides the parabola into identical halves
Domain all the x-values of a function, left to right
Range all the y-values of a function, f(x) values, bottom to top
Rate of Change the amount of vertical change for each unit of horizontal change, same as slope
Solution to a System the point (x,y) of intersection of two lines, infinite and no solution are also options
Solution to a Quadratic the zeroes or x-intercepts of a quadratic, it can be 1, 2 or no answer.
Solution to an Inequality the shaded region of an inequality, or on the solid line. Dotted line not included.
Steeper moves up faster than it does over.; harder to ride your bike up
X-Intercept the point (?, 0) where a graph crosses the x-axis (right/left axis), AKA: roots, zeros, solutions
Dependent Quantity the variable that depends on the other one, y is dependent on x
Independent Quantity the variable that is depended upon, x is independent
Minimum the lowest y-value of a graph
Maximum the highest y-value of a graph
Parent Function – Linear y = x, straight line with a slope of 1 that goes through the origin
Parent Function – Quadratic y = x2 parabola that is sitting on the origin opening up
< less than, shade below dotted line.
<= less than, shade below solid line
Direct Variation (varies directly) A proportional relationship. Graph always goes through (0,0)
Perpendicular Forms a right angle (90 degrees). The slopes are reciprocal (opposite sign and flipped upside down).
Vertical Stretch Gets narrower. Stretches from top and bottom. The “a” value gets farther away from zero.
Vertical Shrink or compression Gets wider. Shrinks from top and bottom. The “a” value gets closer to zero (closer to a flat line).
Created by: dshannon2