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Mars2501 [29]
3 years ago
5

Finding the slope in y- intercept form 2×+7y=21

Mathematics
1 answer:
astraxan [27]3 years ago
4 0
To find the slope from an equation, solve the equation for y.
The equation will have the form y = mx + b, called the slope-intercept form.
Then m = slope.

Let's solve your equation for y.

2x + 7y = 21

Subtract 2x from both sides.

7y = -2x + 21

Divide both sides by 7.

y = -\dfrac{2}{7} x + \dfrac{21}{7}

y = -\dfrac{2}{7} x + 3

Now compare the equation above to y = mx + b.
m is the number that multiplies x, and it is the slope.

m = -\dfrac{2}{7}
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