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Alexus [3.1K]
3 years ago
8

Find the linear equation that is the straight line through (1, 2) and (8, 30).​

Mathematics
2 answers:
Lena [83]3 years ago
4 0

Answer:

y = 4x - 2

Step-by-step explanation:

→ First find the gradient

\frac{x2-x1}{y2-y1} =\frac{30-2}{8-1} = 4

→ Put into y = mx + c format

y = 4x + c

→ Substitute ( 1 , 2 ) into y = 4x + c

2 = 4 + c so c = -2

→ Rewrite into equation format

y = 4x - 2

marissa [1.9K]3 years ago
3 0
Slope
= 30-2/8-1

= 28/7

= 4


Equation:
y - 2/x - 1 = 4

y - 2 = 4(x-1)

y - 2 = 4x - 4

y = 4x - 4 + 2

y = 4x - 2

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