31/2x + 215 = 495 multiply both sides of simplified equation to get x alone on the left side of the equation. simplify.

Step-by-step explanation:

The equation is not well presented but I assume the equation is

3½x + 215 = 495

Converting the mixed fraction to improper fraction

Then, we have

7x/2 + 215 = 495

To eliminate the fraction aspect we will multiply both the right hand side and the left hand side by 2

2 ( 7x/2 + 215) = 2×495

Open bracket

7x + 430 = 990

Subtract 430 from both sides of equation

7x + 430-430 = 990-430

7x = 560

Divide both sides by 7

7x/7 =560/7

x = 80

The value of the unknown x is 80

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is