1. **Find the equation of the line that passes through (4,3) with gradient $g=2$.**
The formula for the equation of a line with gradient $m$ passing through point $(x_1,y_1)$ is:
$$y - y_1 = m(x - x_1)$$
Substitute $m=2$, $x_1=4$, $y_1=3$:
$$y - 3 = 2(x - 4)$$
Simplify:
$$y - 3 = 2x - 8$$
$$y = 2x - 8 + 3$$
$$y = 2x - 5$$
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2. **Find the equation of the line joining the points $(-2,1)$ and $(3,2)$.**
First, find the gradient $m$:
$$m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{2 - 1}{3 - (-2)} = \frac{1}{5}$$
Use point-slope form with point $(-2,1)$:
$$y - 1 = \frac{1}{5}(x + 2)$$
Simplify:
$$y - 1 = \frac{1}{5}x + \frac{2}{5}$$
$$y = \frac{1}{5}x + \frac{2}{5} + 1$$
$$y = \frac{1}{5}x + \frac{7}{5}$$
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3. **Are the two lines $y = \frac{3}{4}x - 5$ and $4y - 3x + 10 = 0$ parallel?**
Find gradient of second line:
$$4y - 3x + 10 = 0 \Rightarrow 4y = 3x - 10 \Rightarrow y = \frac{3}{4}x - \frac{10}{4}$$
Gradient of second line is $\frac{3}{4}$.
Gradient of first line is $\frac{3}{4}$.
Since $m_1 = m_2 = \frac{3}{4}$, the lines are parallel.
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4. **Find the gradient of a line perpendicular to the line $x + 3y - 4 = 0$.**
Rewrite line in slope-intercept form:
$$x + 3y - 4 = 0 \Rightarrow 3y = -x + 4 \Rightarrow y = -\frac{1}{3}x + \frac{4}{3}$$
Gradient of given line is $m_1 = -\frac{1}{3}$.
Gradient of perpendicular line $m_2$ satisfies:
$$m_1 \times m_2 = -1$$
So:
$$-\frac{1}{3} \times m_2 = -1 \Rightarrow m_2 = 3$$
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5. **Find the equation of the line that passes through the point $(6,-2)$ and is parallel to the line $2x - 3y + 4 = 0$.**
Rewrite given line in slope-intercept form:
$$2x - 3y + 4 = 0 \Rightarrow -3y = -2x - 4 \Rightarrow y = \frac{2}{3}x + \frac{4}{3}$$
Gradient of given line is $m = \frac{2}{3}$.
Equation of line parallel to this and passing through $(6,-2)$:
$$y - y_1 = m(x - x_1)$$
$$y + 2 = \frac{2}{3}(x - 6)$$
Simplify:
$$y + 2 = \frac{2}{3}x - 4$$
$$y = \frac{2}{3}x - 4 - 2$$
$$y = \frac{2}{3}x - 6$$
Line Equations 582D0C
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