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dsp73
3 years ago
12

What is the equation of the line in slope-intercept form?

Mathematics
2 answers:
irga5000 [103]3 years ago
8 0

Answer:

y = \frac{5}{2} x + 5

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 )

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (- 2, 0) and (x₂, y₂ ) = (0, 5) ← 2 points on the line

m = \frac{5-0}{0-(-2)} = \frac{5}{0+2} = \frac{5}{2}

The line crosses the y- axis at (0, 5 ) ⇒ c = 5

y = \frac{5}{2} x + 5 ← equation of line

Nookie1986 [14]3 years ago
6 0

Answer:

y = 2.5x + 5

Step-by-step explanation:

Slope intercept form is y = mx + b, where m is the gradient or slope and b is the y-intercept.

To find the gradient/slope (m), we need to do change in y ÷ change in x.

  1. Pick two co-ordinates on the line; (0, 5) and (-2, 0)
  2. Subtract the y co-ordinates; 5 - 0 = 5
  3. Subtract the x-co-ordinates; 0 - -2 = 2
  4. Finally, divide 5 by 2; 5 ÷ 2 = 5/2 or 2.5

Now we have y = 2.5x + b. The y-intercept is simply where the line crosses the y axis (it crosses at 0,5). This means the equation of the line is y = 2.5x + 5.

Hope this helps!

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