Question

1. Sam bought a new skateboard. In the state where he lives, the sales tax rate is 6%. If c is the cost of the skateboard and t is the total cost, including the tax, then the variables are related by the equation 1.06c = t. Which variable is the independent variable?

A. c

B. t

C. There is no relationship between the variables.

2. What is the value of y so that the ordered pair (5, y) is a solution to the equation -5x + y = -40?

A. -65

B. 9

C. -15

D. 7

Answer 1

For 1.
the answer is A. The cost of the skateboard is unchanging.

Answer 2

And for the 2.
"Give an ordered pair that is the solution to the equation y = 5x + 2."

Pick a number, any number, and substitute it in for x. Probably easiest is to choose x = 0.

y = 5(0) + 2
y = 2

So therefore, a point on the line would be (0,2), also known as the y-intercept, because that's where the line crosses the y axis.

Answer 3

Thank you!!