What is the direct variation equation if x=3 when y=15
y=5x
100
Find the slope of the line that passes through the points
(7, –4), (4, 8)
What is -4.
100
Find the x-intercept. 4x - 8y = 12
What is 3
100
Write an equation in point-slope form of the line that passes through the point 2,7 and has a slope of -4.
What is y-7=-4(x - 2)
100
Solve this system of equations algebraically y = x + 8 and y=-2.
What is (-10,-2)
200
If y varies directly as x, and x=9 when y=15, find y when x=33.
What is 55.
200
Find the slope of the line that passes through the points
(3, 9), (–2, 8)
What is 1/5
200
Find the y intercept of 3x+8y=-56
What is -7
200
Write an equation in point-slope form that has a slope of 1/2 and passes through the point 7, -6.
What is y+6=1/2(x - 7)
200
Solve this system of equations algebraically y = x - 8 and y=3x
What is (-4, -12)
300
The power absorbed by a solar panel (y) varies directly with its area (x). If an 8 square meter panel absorbs 6400 watts of power. How much does a 12 square meter panel absorb?
The equation shows the cost of an ice cream sundae with different numbers of toppings. C = 0.75x +2.25. What is the y-intercept and what does it represent?
What is 2.25, the cost of a sundae without any toppings. The base price.
300
Write the equation y+3=-2(x - 2) in slope intercept form.
What is y=-2x+1
300
Solve this system of equations algebraically y = x - 4 and 4x +y=26
What is (6, 2)
400
A dishwasher uses 65 gallons of water to wash 5 loads of dishes. The number of gallons it uses is directly proportional to the number of loads the dishwasher can clean. How many gallons of water would be used to wash 12 loads?