Find the x-intercept of the graph of y = a x + b. (Assume b ≠ 0.)

Question

Mathematics

Phoenix

10 March, 23:56

Find the x-intercept of the graph of y = a x + b. (Assume b ≠ 0.)

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Answers (2)

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Reagan Benton · Answer 1

x intercept=-b/a

y intercept=b

Step-by-step explanation:

to find x intercept put y=0

0=ax+b

ax=-b

x=-b/a

to find y intercept put x=0

y=b

Ali Brandt · Answer 2

-b/a = x

Step-by-step explanation:

To find the x intercept, let y = 0 and solve for x

0 = ax+b

Subtract b from each side

-b = ax+b-b

-b = ax

Divide each side by a

-b/a = ax/a

-b/a = x