Step-by-step explanation:
the most common form of line equation is
y = ax + b
a is the slope of the line. it is expressed as the ratio
y coordinate change / x coordinate change
when going from one point to the other. it tells us how steeply inclined the line is, and in what direction (up = + or down = -).
b is the y-intercept (the y value when x = 0). so, the point (0, y), and it tells us how high above or low below the x-axis the line is going.
and the y values in the table ? well, as the equation says, y = 2x + 1.
you take the x value, put it into the place of x in the equation, and then calculate y. that is how functions work.
so,
x y
-2 2×-2 + 1 = -4 + 1 = -3
-1 2×-1 + 1 = -2 + 1 = -1
0 2×0 + 1 = 0 + 1 = 1
1 2×1 + 1 = 2 + 1 = 3
2 2×2 + 1 = 4 + 1 = 5
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 )
calculate m using the slope formula
m = 
with (x₁, y₁ ) = (- 2, 0) and (x₂, y₂ ) = (0, 2) ← 2 points on the line
m = 
= 
= 
= 1
the line crosses the y- axis at (0, 2 ) ⇒ c = 2
y = x + 2 ← equation of line
Remark
The formula for a discriminate is b² - 4*a*c
a = 2
b = 1
c = - 3
So the discriminate =
D = (1)² - 4*2*(-3)
D = 1 - - 24
D = 25
Answer:yes
Step-by-step explanation:
Answer:
679959
Step-by-step explanation:
THE ANSWER IS 679959 BUT IF YOU ESTIMATE TO THE LAST DIGIT THE IT WOULD BE 700000 DUE TO 9 ROUNDING THE 7 TO A 8 AND THEN 8 EOUNDS THE 6 TO A 7 EVERYTHING ELSE BECOMES 0
