Problemas
Alejandra correctly wrote the equation y-3=(1)/(5)(x-10) to represent a line that her teacher sketched.The teacher then changed the line so it had a slope of 2, but still went through the same point. Which equation should Alejandra write to represent the new line? y-6=2(x-10) y-2=(1)/(5)(x-10) y-3=(1)/(5)(x-2) y-3=2(x-10)
Roztwór
Domingo
maestro · Tutor durante 5 años
4.1
(303 Votos)
Respuesta
The correct equation that Alejandra should write to represent the new line is \(y - 3 = 2(x - 10)\).
Explicación
## Step 1The problem involves the concept of linear equations in two variables, specifically the slope-intercept form of a linear equation. The slope-intercept form of a linear equation is given by:### \(y - y_1 = m(x - x_1)\)where
is the slope of the line and \((x_1, y_1)\) is a point on the line.## Step 2In the given equation \(y - 3 = \frac{1}{5}(x - 10)\), the slope
is
and the point \((x_1, y_1)\) is \((10, 3)\).## Step 3The teacher changes the slope of the line to 2, but the line still passes through the same point \((10, 3)\). Therefore, the new equation of the line should have the same point \((10, 3)\) and the new slope
.## Step 4Substituting the new slope and the point into the slope-intercept form, we get:### \(y - 3 = 2(x - 10)\)