Y+3=-3(×+2) Point slope form equation when graphed
1 answer:
The slope m = -3, and the point is (0,-9).
<u>Step-by-step explanation</u>:
The equation of a line in slope-intercept form is given as
y = mx + b
where m represents the slope and
b represents the y-intercept.
⇒ y + 3 = − 3( x + 2)
subtract 3 from both sides.
⇒ y = - 3 x - 9
⇒ m = - 3 and the b = - 9
Hence slope is -3 and y-intercept is -9
y-intercept = - 9 which is the coordinate point (0 ,-9)
To obtain any coordinate point on the line, select values for x and substitute them into the equation for corresponding value of y.
x = -2 ⇒ y = -3 -2 - 9
y = 6 - 9 = -3
Hence the another point on the line is (-2,-3)
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Answer:
(2,√21)
Step-by-step explanation:
The circle centered at the origin has equation:
Any point that satisfies this equation lie on this circle.
When x=2, we substitute and solve for y.
Take square root to get:
Therefore (2,-√21) and (2,√21) are on this circle.
From the options, (2,√21) is the correct answer