Write the standard from through the point given with the given slope ?
Through: ( 1,2 ) slope =7
6 Answers
- la consoleLv 72 months ago
The typical equation of a line is: y = mx + y₀ → where m: slope and where y₀: y-intercept
The slope is (7), so the equation of the line becomes: y = 7x + y₀
The line passes through (1 ; 2), so the coordinates of this point must verify the equation of the line.
y = 7x + y₀
y₀ = y - 7x → you substitute x and y by the coordinates of the point (1 ; 2)
y₀ = 2 - (7 * 1)
y₀ = - 5
The equation of the line is: y = 7x - 5
- PopeLv 72 months ago
This is one of a hundred ways. I would begin with point-slop form, expand, and group terms with the x and y terms left and the constant on the right.
y - 2 = 7(x - 1)
y - 2 = 7x - 7
-7x + y = -5
7x - y = 5
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- llafferLv 72 months ago
Standard form of a linear equation is:
Ax + By = C
Where A, B, and C are integers and A is positive.
Starting with the slope-intercept form of a line and substitute what we know to solve for the unknown intercept:
y = mx + b
2 = 7(1) + b
2 = 7 + b
-5 = b
So the slope-intercept form is:
y = 7x - 5
To put this into standard form, move the "x" term to the left side then multiply both sides by -1 since the leading coefficient is negative:
-7x + y = -5
7x - y = 5