Question

Dani's estimate for the cost of tiling her bathroom floor is $50 plus $3 per square foot. She says that she can model the cost with a linear function equation. Explain whether or not Dani is correct.

Answer 1

Let x represent the number of square ft. which needs to be tiled up and y represent the cost of tiling them

then $50 is the basic cost then y can be written as

$y=50+3x$

which is straight line of slope 3 and y intercept 50