Question

I need help with these questions !

Answer 1

The answer is B.

Explanation:

Y = the holiday meal costs

If they’re charging a holiday meal per person the equation would be 12.50x = y

But we also have a $30 delivery fee so it would be

12.50x + 30 = y

So the equation represents

A holiday meal costing 12.50 is ordered for an x amount of people. There is also a $30 delivery fee. The meal costed y amount of dollars.

Answer 2

See below:

Explanation:

A. y = 30 + 12.50x

Let x be the number of people. It costs 12.50 per person, so y = 12.50x. Notice how the delivery fee is not per person, meaning that the delivery fee is not impacted by the amount of people buying it. Thus, y = 12.50x + 30

B. c = 0.12m + 8.00

See explanation of A:

C. 2

The slope of a line in y-intercept form ( y = mx + b ), is the number before the x. In this case, there is a 2 before the x.

D. y = 2/3x - 3

In slope intercept form, y = mx + b. Plug in the values of m ( slope ) and b( y-intercept ) and you get y = 2/3x - 3

E. y = 1/2x

The slope can be found by dividing the change of y by the change of x. Our points are (0,0) and (2,1). The change in y is 0-1, which is -1; the change in x is (0 - 2), which is -2. -1/-2 is 1/2 so the slope of the line is 1/2. Because when x = 0, y = 0 too, there is no y-intercept, so the equation of the line is y = 1/2