Unit Test Review

Identify the transformation:

 $y=\frac{1}{2}x^2$  

• Vertical Translation, down 2

• Vertical Stretch by a factor of 1/2

• Vertical Compression by a factor of 1/2

• Reflection over x axis

Which equation reflects over the x-axis

• $y=-\left(x\right)^3$

• $y=\left(-x\right)^3$

What happens to the graph when there is a vertical stretch?

• It becomes wider

• It becomes skinnier

What is the formula for slope?

• $y=mx+b$

• $m=\frac{x_2+x_1}{y_1+y_2}$

• $m=\frac{y_2-y_1}{x_2-x_1}$

• $y=x$

In y = mx+b what does the 'm' stand for?

• slope

• y - intercept

• x - intercept

• It doesn't stand for anything

In y = mx+b what does 'b' stand for?

• slope

• y - intercept

• x - intercept

• It does not stand for anything

What is the slope of the line that passes through the points (-2, 3) and (4, -5).

• -1

• $-\frac{3}{4}$

• $-\frac{4}{3}$

• -7

What is the base equation for point-slope form

• $m\ =\frac{\ y_2-y_1}{x_2-x_1}$

• y = mx + b

• Ax+By=C

• y - y1 = m(x - x1)

What is the equation of the line with a slope of 4 and a y intercept of (0, -3)

• y = 4x - 3

• y = 4

• y = 4x

• y = -3x + 4

Which is the graph of

 $y\ =\ \frac{5}{2}x\ +\ 10$  

• 
• 
• 
•