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2 years ago

A line, y mx + b, passes through the point (2, 3) and is parallel to y 2x + 5. What is the value of b?

Mathematics

1 answer:

Vitek1552 [10]2 years ago

3 0

Answer:

Step-by-step explanation:

If a line is parallel to another it must have the same slope

The slope/intercept form of a line is y = mx + b where m is the slope and b the y intercept

The line y = 2x + 5 has slope 2

So the slope of the line that passes through (2,3) must also have the slope 2

We have
y = 2x + b; Substituting x =2, y =3 in this equation gives us
3 = 2 (2) + b or b = -1

Hence the equation of the line is
y = 2x -1

Cross-check

Substitute for x = 2 ==> y = 2(2) - 1 = 3 which is consistent

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A line, y mx + b, passes through the point (2, 3) and is parallel to y 2x + 5. What is the value of b?​

A line, y mx + b, passes through the point (2, 3) and is parallel to y 2x + 5. What is the value of b?