Whats the slope and y-intercept of y=-3x+4?
2 answers:
Answer:
Step-by-step explanation:
The equation of the line is in slope intercept form or:
where <em>m</em> is the slope and <em>b</em> is the y-intercept.
Essentially:
- The coefficient to x, or number being multiplied is the slope
- The number added or subtracted from the x term is the y-intercept
The line given is:
-3 is the coefficient of x and 4 is being added to -3x.
The slope (m) is -3 and the y-intercept (b) is 4.
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Answer:
y = - x + 2
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = 3x - 3 ← is in slope- intercept form
with slope m = 3
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
, hence
y = - x + c ← is the partial equation of the perpendicular line
To find c substitute (3, 1) into the partial equation
1 = - 1 + c ⇒ c = 1 + 1 = 2
y = - x + 2 ← equation of perpendicular line