is it possible to find equation for a line if graph of line is given...i mean just from image ..if yes then how?
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yes in graph the value of x and y is given when we take them we make the equation
vandanasinghal:
ok
The slope-intercept form of a linear equation is
y = mx + b
where m is the slope and b is the y-intercept.
Theslope formulaism = change in ychange in x
y = mx + b
where m is the slope and b is the y-intercept.
Theslope formulaism = change in ychange in x
First find the slope m. Pick two points on the line, such as (0, -9) and (3, -10). Plug those points into the slope formula.
m = change in ychange in x
m = -10 − -93 − 0Plug in (0, -9) and (3, -10)
m = -13Simplify
Theslopeis-13.
Now find the y-intercept. Since the line crosses the y-axis at -9, the y-intercept is -9.
Finally,usetheslopem = -13andthey-interceptb = -9towritetheequationinslope-interceptform.
y = mx + b
y = -13x + -9Pluginm = -13andb = -9
y = -13x − 9Rewrite as subtraction
m = change in ychange in x
m = -10 − -93 − 0Plug in (0, -9) and (3, -10)
m = -13Simplify
Theslopeis-13.
Now find the y-intercept. Since the line crosses the y-axis at -9, the y-intercept is -9.
Finally,usetheslopem = -13andthey-interceptb = -9towritetheequationinslope-interceptform.
y = mx + b
y = -13x + -9Pluginm = -13andb = -9
y = -13x − 9Rewrite as subtraction
on this site * https://www.ixl.com/math/algebra-1/slope-intercept-form-write-an-equation-from-a-graph * u get the answer
wc
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