Slope and Y-Intercept
What is the y-intercept of the equation y=2x+3?
3
What is a dilation?
When a figure gets bigger or smaller.
What is the formula for the volume of a cylinder?
V = (pi)r2h
The area of a square wall is 182 square feet. What is closest to the side length in feet of this wall?
13.5
Solve the equation: 2x + 3x = 45
9
What is the formula to calculate the slope of a line given two points?
y2-y1/x2-x1
What is the scale factor if a rectangle with a width of 3 is dilated to a width of 6?
2
Calculate the volume of a cylinder with a radius of 3 cm and a height of 5 cm. (In terms of pi)
45pi
A student solved the equation x2=132 to find the length of the diagonal of a square in centimeters. Rounded to the nearest whole number, what is length of the diagonal?
11 cm
Solve the equation: 2x + 9 - 4x = x - 12
7
If the y-intercept of a line is 5 and the slope is 3, what is the equation of the line?
y = 3x + 5
Write the algebraic rule after a dilation with a scale factor of k?
(kx, ky)
What is the formula for the volume of a cone? (not the one on the STAAR chart)
V = 1/3 (pi)r2h
The square root of 3 is in between what 2 whole numbers?
1 and 2
Solve the equation: -3x+4=-2x+1
3
In the equation of a line y=mx+b, what does b represent?
The y-intercept.
A polygon will be dilated on a coordinate grid to create a smaller polygon. Which rule could represent this dilation?
A. (0.5-x, 0.5-y)
B. (x-7,y-7)
C. (5/4x, 5/4y)
D. (0.9x, 0.9y)
D. (0.9x, 0.9y)
If the volume of a sphere is 36ππ cm³, what is its radius?
3 cm3
Write the following number in scientific notation: 150,000,000,000
1.5 x 1011
Solve the following equation: 12x - 15 = 6 - 3x
7/5
Find the slope of the line that passes through the points (2, 3) and (4, 7).
2
Point A (12, 9) dilated to Point A' (8,6). Write the algebraic rule for this transformation.
(2/3x, 2/3y)
Find the volume of a cone with the following measurements:
- Radius: 5cm
- Height: 12 cm
- Slant Height: 13 cm
314.2 cm3
Write the number in scientific notation: .00000003
3 x 10-8
Solve the equation: 2x + 2(x + 7) + 4x - 2 = 4(2.5x)
6