If m = − 7 / 2 is slope, y - intercept is 12 and the point ( x, 5 ) lies on the line. What is the value of x ?

Mathematics

1 answer:

Vikentia [17]3 years ago

5 0

Answer:

x = 2

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y-intercept )

here m = - $\frac{7}{2}$ and c = 12

y = - $\frac{7}{2}$ x + 12 ← equation in slope-intercept form

given (x, 5) lies on the line, solve for x by letting y = 5

- $\frac{7}{2}$ x +12 = 5

multiply all terms by 2 to eliminate the fraction

- 7x + 24 = 10 ( subtract 24 from both sides )

- 7x = - 14 ( divide both sides by - 7 )

x = 2

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