A line passes through (4, 5) and (8, 9). Which equation best represents the line?
2 answers:
Answer:
y = x + 1
Step-by-step explanation:
I got the answer right on the test
Slope (m) = change in Y over change in X change in Y = 9-5 = 4 change in x = 8-4 = 4 slope = 4/4 = 1 m = 1 the y intercept (b) would be found by using the formula y = mx+b find b by replacing y, m and x in the equation with one of the points and the calculated slope: (4,5) x = 4, y = 5 and slope m = 1 5 = 1*4 +b 5 = 4+b b = 5-4 b=1 so the equation of the line would be y = x +1 the answer is A
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Answer:
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Answer:
6 and -14
Step-by-step explanation:
Area of the triangle = 1/2 ab
42 = 1/2 (x)(x+8)
42 *2 = x(x+8)
84 = x²+8x
x²+8x-84 = 0
x²+14x-6x-84 = 0
x(x+14)-6(x+14) = 0
x-6 = 0 and x+14 = 0
x = 6 and -14
Hence the values of x are 6 and -14
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Answer:
y = 65
Step-by-step explanation:
45 + 57 = x + y
x = 37
45 + 57 = 37 + y
45 + 57 = 102
102 = 37 + y
102 = 37 + y
-37 -37
102 - 37 = 65
37 + y - 37 = y
65 = y
y = 65