find the y-intercept and the slope

x + 2y -3 =0

You first have to get this into slope-intercept form:
2y=-x+3
y=-0.5x+1.5
This form is y=mx+b, where m is the slope and b is the y-intercept.

To find the y-intercept and slope of the equation x + 2y - 3 = 0, we need to rearrange the equation in the slope-intercept form, which is y = mx + b.

Start by isolating the term with y:
2y = -x + 3

To solve for y, divide both sides of the equation by 2:
y = -0.5x + 1.5

Comparing this equation to y = mx + b, we can see that the slope (m) is -0.5 and the y-intercept (b) is 1.5.

Thus, the slope of the equation is -0.5 and the y-intercept is 1.5.