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Sagot :
Answer:
[tex]y = -2x + 5[/tex]
m = -1
b = 5
Step-by-step explanation:
Hello!
Slope - Intercept Form: [tex]y = mx+b[/tex]
- m = slope
- b = y-intercept
Slope
The slope of the line is the rate of change, or how the graph changes in y as it changes in x.
Slope can be calculated by the formula: [tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
We need two points on the line to get the x and y-values. I'm going to choose points (0,5) and (4,-3).
Calculate Slope
- [tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
- [tex]m = \frac{5 - (-3)}{0 - 4}[/tex]
- [tex]m = -\frac{8}{4}[/tex]
- [tex]m = -2[/tex]
The slope is -2.
Y-intercept
The y-intercept of the line is where the graph touches the y-axis (x = 0). It can be found by looking at the intersection of the graph and the axis.
The intersection happens at point (0,5), so the y-intercept is 5.
Equation
We found m, the slope, to be -2 and b, the y-intercept, to be 5. We can just plug it into the equation format.
Equation: [tex]y = -2x + 5[/tex]
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